/Engine/Plugins/Media/PixelStreaming/Source/PixelStreaming/Public/PixelStreamingDelegates.h
C++ Delegate.
typedef TMulticastDelegate_ThreeParams< void, [FPixelStreamingPlayerId](API\Plugins\PixelStreaming\FPixelStreamingPlayerId), [FName](API\Runtime\Core\UObject\FName), float > FStatChangedNative